5A. Develop the program for the mid-point circle drawing algorithm

#include<graphics.h>
#include<iostream.h>
#include<conio.h>
#include<math.h>
void main()
{
int gd=DETECT,gm,x,y,r,p;
initgraph(&gd,&gm,"C:\\TurboC3\\BGI");
cout<<"Enter the radius of the circle:";
cin>>r;
x=0;
y=r;
p=1-r;
do
{
putpixel(100+x,100+y,15);
putpixel(100+x,100-y,15);
putpixel(100+y,100+x,15);
putpixel(100+y,100-x,15);
putpixel(100-x,100+y,15);
putpixel(100-x,100-y,15);
putpixel(100-y,100+x,15);
putpixel(100-y,100-x,15);
if(p<0)
{
x++;
p=p+2*x+3;
}
else
{
x++;
y--;
p=p+2*(x-y)+5;
}
}
while(x<y);
getch();
closegraph();
}